﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace YB.Mall.Utility
{
    public class RandomUtil
    {
        private static char[] constant ={
            '0','1','2','3','4','5','6','7','8','9', 'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'
        };

        private static char[] constantNum ={
            '0','1','2','3','4','5','6','7','8','9'
        };
        public static string GenerateRandom(int Length)
        {
            StringBuilder newRandom = new StringBuilder(62);
            Random rd = new Random();
            for (int i = 0; i < Length; i++)
            {
                newRandom.Append(constant[rd.Next(62)]);
            }
            return newRandom.ToString();
        }

        public static int GenerateRandom_Num(int Length)
        {
            StringBuilder newRandom = new StringBuilder(62);
            Random rd = new Random();
            for (int i = 0; i < Length; i++)
            {
                newRandom.Append(constantNum[rd.Next(9)]);
            }
            return Convert.ToInt32(newRandom.ToString());
        }
    }
}
